Element block pseudo-class :active generated with transition position static display block font-size 16px box-sizing content-box box-shadow 1px 1px 1px rgba(0,0,0,0.3) float none overflow hidden padding 20px border-radius margin 0px line-height 1 width 160px z-index auto cursor default font-weight normal text-shadow 1px 1px 1px rgba(0,0,0,0.2) border 0px rgba(0,0,0,1) solid transform background height auto